The 2018 Elements, Atoms and Bonding RHO Pre-Mid Term Quiz assesses understanding of basic chemical principles including the nature of compounds, atomic theory, and the discovery of subatomic particles. It evaluates knowledge crucial for grasping the fundamental building blocks of matter.
Is a well-tested idea that EXPLAINS and connects a wide range of observations. It explains how nature works.
Is a statement that describes nature's behavior.
Is a method of inquiry used to test an idea.
Option 4
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Electrons move around a small positively charged nucleus in the center of the atom.
The electrons are in orbit like planets around the sun.
Electrons are in a cloud that floats around the nucleus.
Electrons have only specific amounts of energy related to the orbits in which they move.
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Oxygen
Air
Soil
Orange juice
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Atoms
Molecules
Ions
Elements
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Made of two or more elements chemically combined.
The building block of all matter.
A mixture of elements.
A pure substance.
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Smooth and solid, like a lacrosse ball, that cannot be broken down into smaller pieces.
Like a muffin with positive charges and electrons scattered in spheres around the positive charges.
Like planets orbiting the sun, or the layers of an onion, electrons orbit the nucleus.
Like a cloud, with expanding energy levels.
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Chadwick
Bohr
Thomson
Rutherford
Dalton
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Protons
Neutrons
Electrons
Nucleus
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Atoms have no overall electrical charge because each atom has the same number of electrons as protons.
All atoms of the same element are exactly alike and have the same mass. Atoms of different elements are different and have different masses.
An atom of one element cannot be changed into an atom of a different element. Atoms cannot be created or destroyed in any chemical change, only rearranged.
Every compound is composed of atoms of different elements combined in a specific ratio.
All elements are composed of atoms that cannot be divided.
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